1. Vehicle Suspension
  2. Timbren
  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Extra Heavy Duty
Timbren Suspension Enhancement System - Rear Axle

Timbren Suspension Enhancement System - Rear Axle

Item # TFR250SDJ
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Vehicle Suspension

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8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use. Lowest Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Rear Axle part number TFR250SDJ can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Timbren Vehicle Suspension - TFR250SDJ

  • Timbren
  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Extra Heavy Duty

8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


Features:

  • Improves suspension, handling, and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride
    • Allows the leaf spring ample movement while cushioning light loads
      • Rides just as smoothly when you're not hauling a load
    • Becomes more rigid as more weight is added for a great performance when you're hauling a heavy load
      • Increases stability
      • Reduces vehicle sag
  • Works independently - side-to-side adjustment
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as a shock absorber, taking the brunt of bumps and rough roads
    • Extends the life of your vehicle's suspension
  • Includes 2 Aeon hollow rubber springs, custom-fit brackets, and hardware for simple installation
    • Installs directly onto frame
    • No drilling required


Specs:

  • Load-leveling capacity: 8,600 lbs
    • Timbren springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
  • Lifetime warranty
  • Satisfaction guarantee


An example of sag on a vehicle's rear axle under a heavy load

Whether you're hauling heavy loads in your bed or cargo area or you're towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.


Diagram of the Timbren spring installed

The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits, 1" above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride that you are used to.


Animation of a standard Timbren rubber spring

Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape increases resistance, stiffening the suspension and keeping your vehicle level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's side or passenger's side of your vehicle. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when you are hauling off-center loads.


An example of a trailers swaying

Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer, and this helps to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or a passing semi), because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.


An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.


Timbren Suspension Enhancement Compared to the Competition

Timbren's Suspension Enhancement Systems are much easier to install than air springs - there are no air hoses to run, no compressors or gauges to hook up, and no manual adjustments to make. The rubber construction makes Timbren's springs more elastic than similar products constructed of microcellular urethane. And more elasticity allows for a more comfortable ride because the rubber has more travel.



FR250SDJ Timbren SES with Aeon Hollow Rubber Springs - Rear Axle

Installation Details TFR250SDJ Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Suspension Enhancement System - Rear Axle - TFR250SDJ

Average Customer Rating:  4.7 out of 5 stars   (2186 Customer Reviews)

8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.

- TFR250SDJ
by:

You guys are great to work with. Thanks again 573793



- TFR250SDJ
by:
2017 Ford F-250 Super Duty

These things work great. You never have to worry about air leaks or the air pressure like you do when you have bags. 601205


Comments
They are still working great.
Harold - 01/30/2020

65052

- TFR250SDJ
by:
Ford F-250 Super Duty

These installed on my F250 very easily. They dwarf the stock units. Reduced the sway and proposing on my truck with a 2600 lb camper in the bed. Highly recommend this product. 641023



- TFR250SDJ
by:
Ford F-250 Super Duty

Good product. I've put Timbren's on 2 previous trucks and never had a problem. Clearance on my F250 Super Duty was not sufficient to jst slip these on. The frame had to be jack a little to install. Otherwise, an easy install. 609935



- TFR250SDJ
by:
2017 Ford F-250 Super Duty

Love the product fits perfect can't wait to hook my toyhauler up 497169



- TFR250SDJ
by:

This is a fantastic product, but I trailer everyday and they now seam a little soft the ride is a little different now 672829



- TFR250SDJ
by:

This product seems as described in etrailer catalog and by salesperson. Very easy to install, both sides and clean up 30 minutes (actual install time was about 15-20 minutes). My truck has 100 gal fuel cell and tool box that is pretty full, so I generally have an extra 1200 lbs in bed of truck full time. Looking at truck it sits level instead of rear sitting up a little, not a big deal except headlights aim a little higher and when pulling trailer with skid steer or mini, truck sags an amount that looks overloaded. After installed truck bed height looks close to an unloaded truck. With full fuel cell the truck rests on the Timbren Suspension Enhancement System, I was pleasantly pleased with the ride and look of the truck. The only minor difference is when truck comes to complete stop, there is a slight "jiggle" in truck. Very minor but it is noticeable. I would definitely recommend and purchase again. I can't wait to see how system performs with loaded trailer hooked up. 594996



- TFR250SDJ
by:
2019 Ford F-250 Super Duty

Very easy to install on my 2019 F250 SD. I did have to jack up the frame an inch to get the bumpers mounted, just a bit to get the mounting plates in the stock pegs. I have yet to try it with my 5th wheel trailer on them, but think they will help a lot with the ride. We shall see in a couple of weeks. 820445



- TFR250SDJ
by:

Have installed product on other PU. REALLY ENJOYED ORDERING FROM YOUR WEB SITE. I hate ordering on-line but found your web site a pleasure to deal with. Great Job. 817003



- TFR250SDJ
by:

They fit good and perform as they say 806254



- TFR250SDJ
by:
2019 Ford F-250 Super Duty

i am installing these this weekend. I did research on these and found several people who actually use them. Because of their response to my questioning, I ordered them. I will say that, after watching several videos on the installation of them, I didn't see any videos that installed them on a 2019 F250 super duty. I was a little concerned since the 2019 F250 super duty is different because it has a plate that the rubber contacts instead of the axle housing. After checking and measuring, I felt confident that they will work. When I received them......the delivery time was amazing! Two days!!! I opened the box and found that the instructions were actually for the F250!! Wow! 746307



- TFR250SDJ
by:

Great product and easy install. I have these on my 2nd truck and will likely install these on all subsequent trucks that will pull a trailer. It really helps take the shock out of hard bumps, potholes and bridge approaches. 736288



- TFR250SDJ
by:

Excellent service. 727124



- TFR250SDJ
by:
2017 Ford F-250 Super Duty

Exactly what I needed at a fair price. 717713



- TFR250SDJ
by:

Product showed up on time and packaging was great. Very easy install, literally all that was needed for install was a 15in socket and ratchet. I installed on a 2019 F250 XLT crew cab 4x4. I will update after next weekend to see how the do once I pull my 5th wheel toy hauler. etrailer is awesome and will return to buy more products from them. 713816



- TFR250SDJ
by:

Works great! 700364



- TFR250SDJ
by:

Product arrived on time. I have a 2017 F250 Lariat, 4x4 diesel with a 5 inch lift kit. The OEM bump stops allowed the rear end to sag almost 5 inches with the stock bump stops. Replaced the stock bump stops with the TFR250SDJ. Works perfectly with heavy loads. I pull a 2019 Keystone Outback travel trailer (loaded weight 10,288 lbs.) with a tongue weight of 1,664 pounds. No more sagging on the back end. 696178



- TFR250SDJ
by:
2019 Ford F-250 Super Duty

Easy install on my 2019 F-250. Had to jack up the back of truck on the hitch to slide the Timbren over the studs. Plenty of room over top of tire to tighten the nuts. I have not hauled with it yet but this should definitely help the suspension. Quality product !! 634614



- TFR250SDJ
by:

Very efficient and great to work with. Will definitely use your company again. Thanks 634338


Comments
Excellent, I have installed or had installed about 8 sets now. Its the only way to go for load leveling. My opinion. Thanks and stay safe.
Jeff L - 04/27/2020

74268

- TFR250SDJ
by:
2017 Ford F-250 Super Duty

Bought these to help level our 2017 F250 when hauling the 5th wheel. I haven't towed with them yet but there was a trick to the install. I had to jack the truck bed up about 2 inches (using the hitch as a push point) to get the part to fit in between the top and bottom of the axle. Once I did this, the job was done in 10 minutes. 597844



- TFR250SDJ
by:

Easy to put on & works great. 566509



- TFR250SDJ
by:
2018 Ford F-250 Super Duty

Just received them just install them looks like they work great etrailer is always right on spot 518854



- TFR250SDJ
by:

Product was what I ordered, just put them in which was very easy. Don’t know for sure how they well work, give me a couple weeks or months to try them out. 479513



- TFR250SDJ
by:
2017 Ford F-250 Super Duty

Shipped fast , etrailer kept in touch . 10 minute unstall. Very easy. 398433



- TDF25004B
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I have a very heavy "Cattle Guard" on the front of my RAM 3500 and this combined with the heavy 4WD and diesel engine the extra support from the Timbren Front Suspension Enhancement System definitely keeps the front suspension from bottoming out. 644652


Comments
Working GREAT!!!!
Ron H - 05/24/2020

77424
26
2483
Show More Reviews

Ask the Experts about this Timbren Vehicle Suspension

  • Which Timbren Suspension Kit for 2017 Ford F-250
    There are 2 Timbren helper spring kits for the 2017 Ford F-250. First we have # TFR250SDJ which has an 8,600 pound capacity and fits 2- and 4-wheel drive models. And second we have # TFRTT350J which is rated for 8,000 pounds and also fits 2- and 4-wheel drive models. The higher weight capacity and the fact it's not as popular as the lower rated kit is why there is a price difference. I prefer to recommend the lower capacity kit as it will give you a smoother unloaded ride quality.
    view full answer...
  • What is the Height of the Timbren Jounce-Style Springs for a 2019 Ford F-250
    The Timbren Jounce-Style Springs # TFR250SDJ for standard duty use on a 2019 Ford F-250 measure 6-7/8" fully assembled. The spring is 4-1/2" tall and the bracket is 2-3/8" tall. The Timbren # TFRTT350J for heavy duty (Severe Service Vehicle) applications measures 7" tall altogether. The spring is 3-5/8" tall and it comes with a 1" spacer and the same 2-3/8" tall bracket.
    view full answer...
  • Height Difference Between Timbren Kits FR250SDJ vs FR350SDJ for 2018 Ford F-350
    The Timbren # TFR250SDJ and the # TFR350SDJ that you referenced use the same bracket so the overall height difference is what you mentioned of 7-9/16 inches for the taller 350 and 6-7/8 for the shorter 250.
    view full answer...
  • Comparing Timbren and SumoSprings Suspension Enhancement for 2017 Ford F-250
    All of the jounce style suspension enhancement kits we offer work in the same way as they basically give the rear suspension additional support as the suspension gets compressed. The Timbrens like the part # TFR250SDJ that you referenced are the most popular option that we sell a lot. They are easy to install, lower priced, and provide really great support. They do have a tendency to make the ride a bit harsh when the vehicle is unloaded which is their biggest drawback. The other jounce...
    view full answer...
  • How Tall are Timbren Springs that Fit 2020 Ford F-250
    There are two Timbren kits that fit your 2020 Ford F-250 we have the # TFR250SDJ which has an 8,600 pound capacity and fits 2- and 4-wheel drive models. And second we have # TFRTT350J which is rated for 8,000 pounds and also fits 2- and 4-wheel drive models. The springs in kit # TFR250SDJ are 4-1/2 inches tall and for kit # TFRTT350J they are 3-9/16 inches tall plus a spacer. So plus the mounting brackets that puts them at 6-7/8 inch and 7 inch.
    view full answer...
  • Timbren Suspension Enhancement System For 2019 Ford F-250 To Reduce Sag
    I recommend the Timbren Suspension Enhancement System - Rear Axle part # TFR250SDJ which will level out the load to reduce the sag. The Timbrens install easily and do not require the maintenance of air bags since they give you one pre-set amount of support. They are also more cost effective to fix sag.
    view full answer...
  • How Tall are Timbren Jounce Springs for 2020 Ford F-250 Super Duty
    The Timbren Suspension Enhancement System - Rear Axle # TFR250SDJ are a fit for both a two-wheel drive as well as a four-wheel drive 2020 Ford F-250 Super Duty. The spring by itself (without the bracket) measures 4-1/2 inches, and with the bracket it measures 6-7/8 inches. These are the perfect option for suspension enhancement for your truck to help stabilize it and improve its handling when you are towing or have a load in the bed. Our customers who have used the Timbrens regard them...
    view full answer...
  • Questions About Timbren Jounce-Style Springs for 2017 Ford F-250 Super Duty
    It is true that the 8,600 lbs capacity Timbren Jounce-Style Springs # TFR250SDJ measures 6-7/8" altogether while the 8,000 lbs capacity Timbren # TFRTT350J for heavy duty (Severe Service Vehicle) applications measure 7" altogether. I went out to the warehouse and double-checked these measurements just now. The 1" space for the # TFRTT350J kit is optional and does not have to be installed. I know it seems a little weird about the pricing, but it is important to remember that these...
    view full answer...
  • Height of Timbren Jounce Style Springs for 2020 Ford F-250
    The springs themselves included with the Timbren Rear Suspension Enhancement System # TFR250SDJ for your 2020 Ford F-250 measure 4-1/2" tall. When the mounting bracket is added you're looking at a total overall height of 6-7/8". I have attached an image to assist. Timbren does recommend that you have around 1/2" to 1-1/2" of clearance between the spring and contact point when the truck is empty. I have attached full installation manual below that you can also look through.
    view full answer...
  • How To Improve The Suspension On Your 2017 Ford F-250
    In order to gain the most stability and support for your 2017 Ford F250, you will want to install both support and sway control components. The most economical way to add support to your truck is by using the Timbren Suspension Enhancement System part # TFR250SDJ. The Timbren springs are a good way to add additional support to your vehicle while towing or hauling a heavy load however, the best way to add support to your truck would involve installing air bags such as the Firestone Ride-Rite...
    view full answer...
  • Gooseneck Towing Capacity for a 2018 Ford F-250 Regular Cab Long Bed
    The towing capacity of your 2018 Ford F-250 will vary based on factors such as engine size, axle ratio, and GCWR. These figures will range from 12,800 lbs on the low end to 18,500 lbs on the high end. If you can provide me with the engine size, axle ratio, and GCWR of your F-250 then I would be happy to provide you with your maximum towing capacity. The weight of your gooseneck trailer and all of its contents cannot exceed the maximum towing capacity of the vehicle. Please keep in mind...
    view full answer...
  • Height of Timbren Helper Springs for a 2017 Ford F-250
    There are actually just 2 Timbren helper spring kits for the 2017 Ford F-250. First we have # TFR250SDJ which has an 8,600 pound capacity and fits 2- and 4-wheel drive models. And second we have # TFRTT350J which is rated for 8,000 pounds and also fits 2- and 4-wheel drive models. So each of those part numbers appears twice because of the 2-wheel drive and 4-wheel drive categories. The springs in kit # TFR250SDJ are 4-1/2 inches tall and for kit # TFRTT350J they are 3-9/16 inches tall....
    view full answer...
  • Height of Timbren Suspension Enhancement Springs with Bracket # TFR250SDJ
    The combined height of the Timbren Suspension Enhancement System - Rear Axle # TFR250SDJ is 6-7/8 inches. I went out to our warehouse to measure them for you and also have attached a photo for you to see where the measurement was taken.
    view full answer...
  • Suspension Enhancement for 2018 Ford F-250 Towing Fifth Wheel Trailer
    The Timbren kit part # TFR250SDJ that you referenced is a confirmed fit for your 2018 Ford F-250 and will give you additional suspension support when towing a fifth wheel trailer. That said the Timbren kits can be a bit harsh when not towing so instead I would recommend the RAS kit part # RAS3611-SHD instead as this will give you the support you are wanting but actually improves the ride quality loaded and unloaded.
    view full answer...
  • What are the Heights of the Timbren Rear Axle Helper Springs for a 2020 Ford F-250
    The springs in kit # TFR250SDJ are 4-1/2 inches tall and for kit # TFRTT350J they are 3-9/16 inches tall. These measurements do not include the mounting brackets that attach to the bottoms of the frame which are approximately 2-3/8 inches tall. The Timbren # TFRTT350J are designed more for commercial duty where your truck bed stays loaded for long periods of time.The Timbren # TFR250SDJ is a more standard duty spring that is ideal for towing applications where you may be experiencing...
    view full answer...
  • Comparing the Timbren SES Part TFR350SDJ and Part TFR250SDJ for a Ford F-250/F-250
    The Timbren Suspension Enhancement System part # TFR350SDJ is correct for your 2017 Ford F-350 whereas the Timbren Suspension Enhancement System part # TFR250SDJ is for a 2017-2019 Ford F-250. The brackets on both of these systems are the same so you can use one on the other but the F-250 kit has a 4-1/2" tall spring whereas the F-350 kit has a 5-3/16" tall spring. Therefore, the F-250 kit will not engage as soon as the F-350 kit when used on a F-350. The later engagement will equate to...
    view full answer...
  • How Tall are The Timbren Kits that Fit 2020 Ford F-250
    We have two Timbren rear suspension kits that fit your 2020 Ford F-250 we have the standard duty # TFRTT350J which has a spring height of 3-9/16 inch and a bracket height of 2-3/8 inches. The severe duty # TFR250SDJ is 3-5/8 inches tall and has the same bracket height of 2-3/8 inches plus a 1 inch spacer. Timbren states that once a system is installed you will need 1/2 inch to 1-1/2 inches of space between the bottoms of the springs and the top of the axle. So that's why the higher...
    view full answer...

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Info for this part was:

Edited by:
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Expert Research:
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Expert Research:
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Installed by:
Jeff D
Installed by:
Robert C
Video Edited:
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Updated by:
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